Parts for Lg LFX21971ST02: Refrigerator Parts

The Water Filter is an OEM part for LG refrigerators. It is a component that ensures the purity and quality of your drinking water and ice.

The water filter is designed to effectively reduce contaminants, impurities, and odors from your water supply, providing you with clean and refreshing drinking water. It employs advanced filtration technology to remove substances such as chlorine, sediment, and other potentially harmful particles.

Causes of a faulty water filter can include regular usage over time, expiration of its filtering capacity, or clogging due to sediment buildup. These factors can result in compromised water quality, decreased flow rate, or unpleasant taste and odor.

Symptoms of a bad water filter may include:

• Decreased water flow from the dispenser
• Water with an unusual taste or odor
• Visible discoloration or particles in the water

This OEM LG part can also be used on Kenmore/Sears appliances. 

This is a replacement mounting screw used to secure appliance panels, trim or components. It restores proper attachment to reduce vibration and rattling and helps keep removable parts firmly in place during operation. What it does:

• Fastens panels, brackets or trim pieces to the appliance frame
• Restores secure fit when original screw is missing, loose, or stripped
• Reduces rattling and vibration caused by loose hardware
• Helps maintain proper alignment of removable covers and control panels

• Disconnect power and water before starting any repair
• Verify size and thread match the original screw before installation
• Use the correct screwdriver or bit to avoid stripping the head
• Tighten securely but do not overtighten — overtightening can strip threads or crack plastic parts
• Keep small parts away from children and pets

This fresh room tray assembly replaces the removable crisper tray that holds produce and deli items in the refrigerator's fresh room, helping contain spills and support proper storage. What it does:

• Provides a stable, removable surface for fruits, vegetables and deli items in the fresh room
• Helps contain small spills and crumbs for easier cleanup
• Restores proper fit and support for drawers or keep-fresh accessories that sit above or below the tray
• Useful when the original tray is cracked, warped or missing

• Tray assembly (single)

• No special tools typically required; tray drops into place or slides onto rails
• Remove food and drawers from the fresh room before installing to avoid spills or injury
• Inspect surrounding rails and seals for damage; replace if worn to ensure proper operation

The Refrigerator Door Shelf is an OEM part for LG refrigerators. This component is designed to fit snugly into the door of the refrigerator, providing convenient storage space for frequently accessed items such as drinks, condiments, and snacks. The shelf measures about 15 inches wide, 3 inches high, and 8 inches deep, providing plenty of storage space.

Symptoms of a failing Refrigerator Door Shelf include:

• The shelf becoming loose or failing to hold items securely
• Cracks or breaks in the shelf, which compromise its load-bearing capacity
• Sagging or bending of the shelf, particularly when loaded with heavier items
• Difficulty in fitting the shelf into its designated slots on the refrigerator door

Causes of a bad door shelf can include overloading beyond its weight capacity, frequent adjustment or removal of the shelf, or material fatigue from regular use and exposure to temperature variations within the refrigerator.

This OEM LG part is also compatible with Sears/Kenmore models.

A replacement rail guide assembly that restores smooth, aligned drawer movement and support. Fits the refrigerator drawer slide system to reduce sticking, sagging, or uneven operation for safer access and proper cycling. What it does:

• Guides and supports a refrigerator drawer along its slide track for stable opening and closing
• Helps prevent the drawer from binding, tilting, or falling out of alignment
• Reduces scraping, grinding, or noisy operation caused by a worn guide
• Restores proper drawer travel and load support for daily use

• Disconnect power to the appliance before inspection or repair to avoid electrical hazards.
• Basic tools are usually required; remove the drawer to access the rail guide assembly.
• Verify left/right orientation before fastening; do not force parts into place.
• If screws or mounting clips are damaged, replace them to ensure secure installation.

The Compressor Overload Protector is an OEM replacement part for LG refrigerators. It plays an important safety role in protecting the compressor from damage due to excessive heat. Located near the compressor unit, the overload protector functions to shut off power to the compressor if temperatures become too high during operation.

Causes can include normal wear over time rendering it less responsive to temperature changes. Mineral or refrigerant deposits may also impede its ability to detect overheating conditions accurately.

Symptoms of a faulty overload protector include:

• Refrigerator fails to properly cool or the compressor does not run
• Circuit board or electrical component failure or burnout
• Lack of cold air production and higher than normal freezer/fridge temperatures

This OEM LG part is also compatible with some Sears/Kenmore models.

The Run Capacitor is an OEM part for LG refrigerators. It is located near the compressor in the appliance's cooling system. It stores electrical energy and provides a boost to the motor during startup, ensuring smooth and efficient operation. The capacitor helps maintain the required power levels, stabilizes voltage, and supports the proper functioning of the compressor.

Causes of a faulty run capacitor can include electrical issues, capacitor aging or degradation, or damage due to power surges. These factors can result in issues such as the compressor not starting, the appliance not cooling properly, or unusual noises coming from the appliance.

Symptoms of a bad run capacitor may include:

• Compressor failing to start or delayed startup
• Inadequate cooling or no cooling at all
• Unusual noises, such as buzzing or clicking sounds

This OEM LG part can also be used on Kenmore/Sears appliances. 

This temperature sensor is the thermistor that monitors compartment temperature and reports it to the control. Replacing a failed sensor helps restore accurate cooling and steady, reliable temperatures in your refrigerator.

• Detects refrigerator or freezer air temperature and sends a resistance signal to the control board
• Helps the control regulate compressor, evaporator fan, and air damper operation
• Also called a thermistor; critical for maintaining stable, set-point temperatures
• Failure symptoms can include sections that are too warm or too cold, erratic temperature swings, or frequent cycling

• Unplug the refrigerator before servicing
• Access location varies by model (often behind an interior cover or air duct); note routing and placement before removal
• Reinstall in the original position and route wiring in the factory path; ensure the connector is fully seated
• Restore power and allow up to 24 hours for temperatures to stabilize

The Freezer Temperature Sensor is an OEM part for LG refrigerators. This sensor monitors the temperature within the freezer compartment, sending readings to the refrigerator’s control board to maintain optimal temperature levels. It plays a crucial role in ensuring that the freezer operates efficiently and keeps food items properly frozen.

Over time, the temperature sensor can fail due to regular wear and tear, electrical issues, or exposure to extreme temperatures. A faulty sensor can lead to inaccurate temperature readings, affecting the freezer's performance.

Symptoms of a bad freezer temperature sensor include:

• Inconsistent freezer temperatures
• The freezer running continuously or not running at all
• Frost buildup in the freezer compartment
• The control board displaying error codes related to temperature

This OEM LG part is also compatible with Sears/Kenmore.

Note: 90 degree elbow coupler (Fits 1/4" diameter tubing on each end) For 5/16" elbow connector, order part# 4932JA3009B.

The Water Line Union is an OEM part for LG refrigerators. This component connects sections of the water line, ensuring a secure and leak-free passage of water to the refrigerator's icemaker and water dispenser. It is an elbow tube union connector, which connects two tubes at a 90-degree angle.

Causes of a bad water line union can include wear and tear from frequent use, damage from high water pressure, or deterioration due to mineral buildup and age. A compromised union can lead to water leaks and disruption in the water supply.

Symptoms of a bad Water Line Union include:

• Water leaks around the connection points
• Reduced water flow to the icemaker or water dispenser
• Puddles or moisture near the refrigerator
• Unusual noises from the water line

This OEM LG part is also compatible with Sears/Kenmore.